Improvement in steam-engines



UNITED STATES PATENT OFFICE.

ALLEN JUDI), OF SPRINGFIELD, MASSAGHUSETTS.`

IMPROVEMENT IN STEAM-ENGINES.

Specification forming part of Letters Patent No. 35,826, dated July 8, 1862.

To all whom it may concern.-

Be it known that I, ALLEN JUDD, of Springiield, in the county of Hampden and State of Massachusetts, have invented a new and useful Improvement in the Steam-Engine for Motive Power; and I do hereby declare that the following is a fullV and exact description there- K of, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the application of one or more cylinders or pistons to a iiy-wheel, which revolve with the Wheel, and piston-rods to match are attached to a stationary shaft that is set within the wheel, one side from its center, so that a lever purchase is obtained upon the periphery of the wheel, so that as the cylinders fill with steam the Wheel is forced around, each rod plunging out and into its cylinder once every revolution ofthe Wheel, and do not have any eudwise movement, but have a vibrating moa tion, and, as there is not any endWise-movement to either the cylinders orpiston-rods, there is not any momentum lost, as there is in all others now in use, which have to start a momentum twice every revolution of the fly- Wheel.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

The pistons and piston-rods may be made in any of theknown ways of making them; but on the end of rod that s'attached to the stationary shaft I form a thick ring which encirclesthe shaft, and inside of the ring next to the shaft I cut a groove nearly one-half of its circumference. 'The center of the groove must be against the center of the rod, in which isahollow extending through its entirelength, opening into the cylinder. Said hollow and groove are for the purpose of conducting steam into the cylinders to give propelling force to the fly-Wheel, and also to conduct it out after having spent its propelling force. The said stationary shaft has two parallel holloWs Within it, which extend from the point Where the steam is applied to and discharged from the shaft against the grooves in said rings. From said hollows in the shaft there are port-holes opposite'to each other under the said grooves, through which ports the steam passes in and out of the cylinders.

On the accompanying plate of drawings, Figure 1 isa perspective view of the engine. Fig. 2 is a crosssection through the fly-wheel, stationary shaft, cylinders, and piston-rods. Fig. 3 is a transverse section.

All of the letters alike marked on the plate of drawingsindicate like parts.

D is the {1y-wheel.

T are rods made fast to the head of the iiy- Wheel and run parallel to its axis, to which rods the cylinders are hung by an ear-piece in the center of the outer head.

H is a head-piece or block, which holds the shaft of the fly-Wheel.

W is a headpiece or block, which holds the stationary shaft.

Y are the cylinders.

X are the piston-rods.

N is the stationary shaft.

Lis where the steam is conducted into the shaft.

A are hollows in the piston-rods.

U is where the' steam discharges from the shaft.

To the said iiy-wheel or its shaft I attach a gear, crank, or belt-pulley for the purpose of propelling other machinery.

What I claim as my invention, and desire to secure by Letters Patent, is-

One or more cylinders with piston-rods to match them applied to a ily-Wheel, the cylin ders being hung to the Wheel in such a manner as to be permitted to vibrate and the piston-rods to be hung at one end to a stationary shaft set within said wheel, one side from its center, so as to give a vibrating motion to each cylinder and its piston-rod as they revolve with the wheel, and give a propelling fo'rce to it by thepressure of steam, all as herein shown.

ALLEN JUDD.

Witnesses:

J. C. MARSHALL, GEO. NV. BLIss. 

